serial: allow buffering to speed up USB virtual COM ports.

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Add begin write and end write hints.  If implemented by the serial
driver, then the driver can buffer up data sent via serialWrite() and
flush it when serialEndWrite() is called.

Implemented at the buffer level as it requires the least change to how
serial_msp and serial_cli are architected.

Also tidy up the visibility in the VCP driver.

Signed-off-by: Michael Hope <mlhx@google.com>

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Michael Hope 2015-07-19 15:56:37 +02:00 • committed by borisbstyle

parent 0e460c18b0

commit 195456f9ac

7 changed files with 84 additions and 2498 deletions

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src/main/io/serial_cli.c

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